恒星天 こうせいてん Meanings Noun sphere of fixed stars (in the Ptolemaic system) Kanji 恒 constant. Read as コウ. 星 star. Read as セイ. 天 heaven. Read as テン. Words containing 恒星天 恒星天文学 (こうせいてんもんがく) stellar astronomy Jinuma: Japanese Dictionary · Word lists